Improvement in slate-frames



fc) g a titten wweeaeww JOHN H. FRENCH, OF ALBANY, NEW YORK..

Letters Patent No. 88,467, dated March 30, 1869.

IMPROVEMENT IN SLATE-FRAMES.

The Schedule referred tb in'these Letters Patent and making part of th'e same.

Z'o all whom it 'may concern: v

Be it known that I, JOHN H. FRENCH, of the city and county of Albany, and State ot' New York, have invented a new and Vimprovedl Corner for School-Slate Frames; and I dohereby declare that the following is a full, clear, and exact description thereof, which-will enable others skilled in the art to make and use-the same, reference being had to the accompanying drawings, forming part of this specificatiolnin which- .Figure lis a face view of a school-slate with this corner attached.

Figure 2 is a transverse vertical section of the same.

Figure 3 is a perspective view of the same.

Figures 4 and 5 are views of the elasti'enap, or cusln ion, tig. 4 being aface view, and iig. 5,'a transverse view.

FiguresV 6 and 7 are views of the metallic band for Y holding the elastic cap, or cushion securely in its place,

and for braeingor strengthening the frame, fig. 6 being afaee view of the band before it is bent, andfig. 7, a perspective view of the same after it is bent.

Similar letters of referencedndicate like parts.

This invention relates toa corner for school-slate frames, which corner is so constructed as to admit of :its being readily and securely attached to the frame of any school-slate.

The elastic portionof the corner being` of such form as to entirely prevent the frame from coming in contact with any plane surface, under any circmnstances, thereby renders the frame noiscless, and at the same time serves as4 aprotection from the jar, and the consequent breaknge, when a slate` falls from the desk, or

from any ordinary height to the iioor, while the metal'- lic band, which holds the elastic portion of the corner securely in its place, is fastened to the two adjacent pieces of' the frame, adding very materially to the strength of the frame, and making it in fact a frame with metallic-bound corners. p

'A represents a frame, made of wood, or any other suitable material, of any convenient width and thickness, andjoined, orfastened atthe corners in the.

usual man ner.

B represents an elastic cap, or cushion, made of Inf,A dia rubber, or other suitable material, its shape being such as to present three pads, upon one or more of I1 b, which support the frame when it rests upon its side, and a centre pad, c, upon which the frame rests, when it is made to stand upon its corner, or edge.

In order to apply this cap to a common square-cornered frame, I cutoff a .portion of the Vcorner-of the frame, as shown by the dotted lines el (l, leaving a face,

or edge that exactly fits the inner face c e of the cap, whether this inner face be straight, curved, or angular', so that' when the inner face of the cap and the corner of the frame, thus prepared, are brought together, they exactly lit each other.v

C represents a metallic band, made of bra-ss, zinc, or other suitable'metal, itsv size and shape being suc-h as to hold the elastic cap B securely in its place -upon the corner of the frame, and to fasten the two adjacent pieces of the frame firmly together. l

In this metallic'band is a slot, or opening, f j, of such' shape as to permit the centre pad c of the elastic cap to project through it.

The middle portion, g g, of the'band is curved, or bent totit the outer edge of the side pads b b, and the end portions, It h., are thus brought at rightangles to each other, to fit thc edges of two adjacent pieces of the frame, to which the band is fas-tened.`

This band may be of any form that will hold the elastic cap in its place, and bind the two pieces of frame together.

What I claim as new, and desire to secure by Letters Patent, is- I 1. A metallic band, of such form as to fit the elastic cap and the two adjacent pieces ot' the frame, for the purposes of holdingthe elastic cap securely inV its place, leaving the pads projecting beyond it, and of making a strong brace for the frame.

2. The combination of the elastic cap, or cushion B, and a metallic band, C, forming a noiseless corner for school-slate frames, as herein described.

JOHN H. FRENCH.

W'itnesses LUorUs H. CHENEY, SAMUEL D. BARR. 

